PSA 16" M4 5.56 NATO 1/7 Nitride MOE EPT Freedom Rifle With Rear MBUS - 516446600

Barrel: Chrome Moly steel. Chambered in 5.56 NATO, with a 1:7 twist rate, M4 barrel extension, and a carbine-length gas system.  Barrel is finished off with a black Magpul MOE Carbine-Length handguard, F-Marked gas sight base, and an A2 flash hider.
Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized.  Uppers include forward assist and dust cover.  These uppers are made for us right here in the USA by a Mil-Spec manufacturer.
Bolt: Full-auto profile bolt carrier group.  Shot-peened, mil-spec Carpenter No. 158® steel bolt.  Gas key hardened to USGI Specifications, fastened with grade 8 screws, and staked per Mil-Spec.  8620 steel M-16 profile carrier is chrome lined and phosphate coated.
Lower: These forged lowers are quality made using 7075-T6 aluminum and are marked "MULTI" for caliber. Finish is hardcoat anodized.  Mil-Spec diameter 7075-T6 buffer tube is hardcoat anodized, has six adjustment positions, and is fitted with a Magpul MOE  Carbine Stock. The grip and trigger guard are Black MOE components and the fire control group is a PSA Enhanced Polished Trigger (EPT) single-stage assembly.
Includes: Magpul MBUS Rear Sight, Black